projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| db753079 JHS |
1 | /* |
| 2 | * net/sched/simp.c Simple example of an action | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or | |
| 5 | * modify it under the terms of the GNU General Public License | |
| 6 | * as published by the Free Software Foundation; either version | |
| 7 | * 2 of the License, or (at your option) any later version. | |
| 8 | * | |
| 9 | * Authors: Jamal Hadi Salim (2005) | |
| 10 | * | |
| 11 | */ | |
| 12 | ||
| 13 | #include <asm/uaccess.h> | |
| 14 | #include <asm/system.h> | |
| 15 | #include <asm/bitops.h> | |
| 16 | #include <linux/config.h> | |
| 17 | #include <linux/types.h> | |
| 18 | #include <linux/kernel.h> | |
| 19 | #include <linux/sched.h> | |
| 20 | #include <linux/string.h> | |
| 21 | #include <linux/mm.h> | |
| 22 | #include <linux/socket.h> | |
| 23 | #include <linux/sockios.h> | |
| 24 | #include <linux/in.h> | |
| 25 | #include <linux/errno.h> | |
| 26 | #include <linux/interrupt.h> | |
| 27 | #include <linux/netdevice.h> | |
| 28 | #include <linux/skbuff.h> | |
| 29 | #include <linux/rtnetlink.h> | |
| 30 | #include <linux/module.h> | |
| 31 | #include <linux/init.h> | |
| 32 | #include <linux/proc_fs.h> | |
| 33 | #include <net/sock.h> | |
| 34 | #include <net/pkt_sched.h> | |
| 35 | ||
| 36 | #define TCA_ACT_SIMP 22 | |
| 37 | ||
| 38 | /* XXX: Hide all these common elements under some macro | |
| 39 | * probably | |
| 40 | */ | |
| 41 | #include <linux/tc_act/tc_defact.h> | |
| 42 | #include <net/tc_act/tc_defact.h> | |
| 43 | ||
| 44 | /* use generic hash table with 8 buckets */ | |
| 45 | #define MY_TAB_SIZE 8 | |
| 46 | #define MY_TAB_MASK (MY_TAB_SIZE - 1) | |
| 47 | static u32 idx_gen; | |
| 48 | static struct tcf_defact *tcf_simp_ht[MY_TAB_SIZE]; | |
| 49 | static DEFINE_RWLOCK(simp_lock); | |
| 50 | ||
| 51 | /* override the defaults */ | |
| 52 | #define tcf_st tcf_defact | |
| 53 | #define tc_st tc_defact | |
| 54 | #define tcf_t_lock simp_lock | |
| 55 | #define tcf_ht tcf_simp_ht | |
| 56 | ||
| 57 | #define CONFIG_NET_ACT_INIT 1 | |
| 58 | #include <net/pkt_act.h> | |
| 59 | #include <net/act_generic.h> | |
| 60 | ||
| 61 | static int tcf_simp(struct sk_buff **pskb, struct tc_action *a) | |
| 62 | { | |
| 63 | struct sk_buff *skb = *pskb; | |
| 64 | struct tcf_defact *p = PRIV(a, defact); | |
| 65 | ||
| 66 | spin_lock(&p->lock); | |
| 67 | p->tm.lastuse = jiffies; | |
| 68 | p->bstats.bytes += skb->len; | |
| 69 | p->bstats.packets++; | |
| 70 | ||
| 71 | /* print policy string followed by _ then packet count | |
| 72 | * Example if this was the 3rd packet and the string was "hello" | |
| 73 | * then it would look like "hello_3" (without quotes) | |
| 74 | **/ | |
| 75 | printk("simple: %s_%d\n", (char *)p->defdata, p->bstats.packets); | |
| 76 | spin_unlock(&p->lock); | |
| 77 | return p->action; | |
| 78 | } | |
| 79 | ||
| 80 | static struct tc_action_ops act_simp_ops = { | |
| 81 | .kind = "simple", | |
| 82 | .type = TCA_ACT_SIMP, | |
| 83 | .capab = TCA_CAP_NONE, | |
| 84 | .owner = THIS_MODULE, | |
| 85 | .act = tcf_simp, | |
| 86 | tca_use_default_ops | |
| 87 | }; | |
| 88 | ||
| 89 | MODULE_AUTHOR("Jamal Hadi Salim(2005)"); | |
| 90 | MODULE_DESCRIPTION("Simple example action"); | |
| 91 | MODULE_LICENSE("GPL"); | |
| 92 | ||
| 93 | static int __init simp_init_module(void) | |
| 94 | { | |
| 95 | int ret = tcf_register_action(&act_simp_ops); | |
| 96 | if (!ret) | |
| 97 | printk("Simple TC action Loaded\n"); | |
| 98 | return ret; | |
| 99 | } | |
| 100 | ||
| 101 | static void __exit simp_cleanup_module(void) | |
| 102 | { | |
| 103 | tcf_unregister_action(&act_simp_ops); | |
| 104 | } | |
| 105 | ||
| 106 | module_init(simp_init_module); | |
| 107 | module_exit(simp_cleanup_module); |